King's Arrival in London
King Charles waved to the public as he arrived in London on Tuesday afternoon after leaving a memorial service earlier in the day.
Prince William's Absence
Prince William, who was scheduled to attend the memorial service, pulled out last minute due to a personal matter.
Royal Family's Attendance
The Duke of York led other family members at the service, including the Queen, Princess Beatrice, Princess Anne, and Zara and Mike Tindall.
Reading at the Service
Crown Prince Pavlos of Greece stepped in to give the reading at the memorial service in place of Prince William.
Memorial for King Constantine of Greece
The service was held in memory of King Constantine II of Greece, who passed away in January last year.